JP2009057561A - Flame retardant-blended polyester material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a flame retardant-blended polyester material having improved fire resistance and excellent mechanical properties. <P>SOLUTION: The flame retardant-blended polyester material comprises 40-64.9 wt.% thermoplastic polyester as component A, 5-10 wt.% polycarbonate as component B, 10-15 wt.% phosphinate and/or diphosphinate and/or polymers of them as component C, 5-10 wt.% melamine polyphosphate as component D, 15-30 wt.% reinforcing material as component E and 0.1-2 wt.% additive as component F. The total of component A, component B, component C, component D, component E and component F by weight is 100 wt.%. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a flame retardant blended polyester material having improved fire resistance and excellent mechanical properties.

  The chemical composition of many plastics makes them easily flammable. Thus, plastics usually must be equipped with a flame retardant to enable the achievement of stringent flame retardant requirements required by plastic manufacturers and also to some extent by law. A wide range of flame retardants and flame retardant synergists are known for this purpose and are also commercially available.

  Use of non-halogenated flame retardant systems in the event of a fire for some time, as non-halogenated flame retardant systems have additional advantageous features with respect to smoke density and composition and for environmental reasons Has been preferred. Among non-halogenated flame retardants, phosphinic acid salts (phosphinic acid salts) have been found to be particularly effective for thermoplastic polyesters (Patent Documents 1 and 2). Calcium phosphinate and aluminum phosphinate have been described as being very effective in polyesters and have fewer obstacles to the properties of polymer molding composition materials compared to, for example, alkali metal salts (Patent Document 3).

  Moreover, synergistic combinations of phosphinates with various nitrogen-containing compounds have been found, and such combinations are more effective as flame retardants in many polymers than phosphinate salts alone. It is effective (Patent Document 4, Patent Document 5, Patent Document 6, and Patent Document 7).

  A polybutylene terephthalate having a nitrogen-containing flame retardant, having a phosphinate, and having a charring polymer has been described (Patent Document 8). Here, the carbonized polymer is polyetherimide, polyphenylene ether, polyphenylene sulfide, polysulfone, polyether sulfone, polyphenylene sulfide oxide, or phenol resin. Addition of carbonized polymer improves flame retardancy. The disadvantage of the additives used in that publication is that the cost of carbonized polymers is high and they also tend to cause discoloration.

Also described are thermoplastic molding compositions composed of polybutylene terephthalate and other polyesters of polybutylene terephthalate, and also reaction products derived from phosphinates and nitrogen-containing compounds and phosphoric acid. (Patent Document 9). Polyethylene terephthalate (PET) and polytrimethylene terephthalate are preferred. The addition of PET achieves UL 94 V-0, and also good tracking resistance and good mechanical properties. GWIT 775 ° C to IEC 60695-2-13 is achieved using a 1.5 mm thick material.
DE-A-2 252 258 DE-A-2 447 727 EP-A-0 699 708 PCT / EP 97/01664 DE-A-197 34 437 DE-A-197 37 727 US-A-6,255,371 WO2005 / 059 018 DE 10 2005 050956

  In polyesters, when phosphinates are used alone or in combination with other flame retardants, there is usually some degree of polymer disintegration and this adversely affects the mechanical properties of the polymer system.

  Another disadvantage is the unreliable UL 94 V-0 classification caused by the excessive afterflame time of individual specimens, the lack of a reliable GWIT 775 ° C classification at thin wall thicknesses (<1.5 mm), and especially glass For (fiber) content 25-35%, the value for tensile strength at break is less than 2%.

  Surprisingly, now the addition of polycarbonate to polyester, especially polybutylene terephthalate, and the flame retardant combination based on phosphinate, is a reliable UL 94 V-0 classification, increased glow wire resistance, mechanical We have found that it is possible to produce flame retardant blended polyester materials featuring improved mechanical properties and reduced polymer collapse.

  Accordingly, the present invention relates to the phosphinic acid salt of formula (I) and / or the formula (II) as component A, 40 to 64.9% by weight of thermoplastic polyester, as component B, 5 to 10% by weight of polycarbonate, and as component C. 10-15% by weight of diphosphinic acid salts and / or these polymers:

(In the formula
R ¹ and R ² are the same or different and are H or linear or branched C ₁ -C ₆ -alkyl, and / or aryl;
R ³ is linear or branched C ₁ -C ₁₀ -alkylene, C ₆ -C ₁₀ -arylene, or -alkylarylene, or -arylalkylene;
M is Mg, Ca, Al, Sb, Sn, Ge, Ti, Fe, Zr, Ce, Bi, Sr, Mn, Li, Na, K, and / or a protonated nitrogen base;
m is 1-4; n is 1-4; and x is 1-4),
As component D, 5-10% by weight of melamine polyphosphate, as component E, 15-30% by weight of reinforcing material, and as component F, 0.1-2% by weight of further additives, where Provides a flame retardant blended polyester material, the sum of the components of which is 100% by weight.

It is particularly preferred that R ¹ and R ² are the same or different and are methyl, ethyl, n-propyl, isopropyl, n-butyl, tert-butyl, n-pentyl, and / or phenyl.

R ³ is methylene, ethylene, n-propylene, isopropylene, n-butylene, tert-butylene, n-pentylene, n-octylene, or n-dodecylene; phenylene or naphthylene; methylphenylene, ethylphenylene, tert-butylphenylene , Methyl naphthylene, ethyl naphthylene, or tert-butyl naphthylene; preferably phenylmethylene, phenylethylene, phenylpropylene, or phenylbutylene.

  Component E is an inorganic particulate filler based on talc, mica, silicate, quartz, titanium dioxide, wollastonite, kaolin, amorphous silica, magnesium carbonate, chalk, feldspar, and / or barium sulfate. preferable.

  Component E is particularly preferably glass fiber.

  The flame retardant blended polyester material preferably further contains carbodiimide.

  Component F is preferably a lubricant and / or a mold release agent.

  The lubricant and / or mold release agent is a long chain fatty acid, a salt thereof, an ester derivative and / or an amide derivative thereof, a montan wax, and / or a low molecular weight polyethylene wax and / or a low molecular weight polyprene wax. preferable.

  The present invention also provides a method for producing the blended flame retardant polyester material of the present invention, comprising mixing components A to F by melt extrusion in proportions by weight as described above.

  In addition, the present invention provides a fiber, a foil, and a molded article composed of the flame retardant-blended polyester material according to any one of claims 1 to 7.

  Finally, the present invention provides a fiber, foil, and molded article made of the flame retardant-blended polyester material of the present invention according to claim 9, at home, in industry, in medicine, in automobile, in aircraft, in ship Or use in spacecraft, or in other means of transportation, in office equipment, or in goods and structures that require a relatively high level of fire protection.

  M is preferably magnesium, calcium, aluminum or zinc, in particular aluminum or zinc.

  Preferably, m is 2 or 3; and n is 1 or 3; and x is 1 or 2.

  The thermoplastic polyester (component A) is selected from the group of polyalkylene terephthalates. The polyalkylene terephthalates for the present invention are derived from aromatic dicarboxylic acids or their reactive derivatives (eg dimethyl esters or anhydrides) and aliphatic, cycloaliphatic or araliphatic diols. Reaction product, or a mixture of these reaction products.

  Suitable polyalkylene terephthalates according to the invention can be prepared from terephthalic acid (or reactive derivatives thereof) and aliphatic or cycloaliphatic diols having 2 to 10 carbon atoms in a known manner (Kunststoff-Handbuch [Plastics Handbook], vol. VIII, pp. 695-710, Karl-Hanser-Verlag, Munich 1973).

  The polyalkylene terephthalate to be used preferably according to the invention preferably contains at least 80 mol%, preferably 90 mol%, of terephthalic acid radicals, based on the dicarboxylic acid.

  The polyalkylene terephthalates to be used preferably according to the invention have not only terephthalic acid radicals but also radicals of other aromatic dicarboxylic acids having 8 to 14 carbon atoms, or 4 to 12 carbon atoms Aliphatic dicarboxylic acid radicals can also be contained up to 20 mol%, examples being phthalic acid, isophthalic acid, naphthalene-2,6-dicarboxylic acid, 4,4'-diphenyldicarboxylic acid, succinic acid, adipic acid, It is a radical of sebacic acid, azelaic acid, cyclohexanediacetic acid, cyclohexanedicarboxylic acid.

  The polyalkylene terephthalates to be used according to the invention can be branched by incorporating relatively small amounts of tri- or tetrahydric alcohols, or tribasic or tetrabasic carboxylic acids, As described in DE-A-19 00 270. Examples of suitable branching agents are trimesic acid, trimellitic acid, trimethylolethane, and trimethylolpropane, and pentaerythritol.

  Particularly preferred according to the invention are terephthalic acid and its reactive derivatives (eg dialkyl esters thereof) and ethylene glycol and / or 1,3-propanediol and / or 1,4-butanediol (polyethylene terephthalate). , Polytrimethylene terephthalate, and polybutylene terephthalate), and mixtures of these polyalkylene terephthalates.

  Suitable polybutylene terephthalates are at least 80 mol%, preferably 90 mol%, based on dicarboxylic acid, and at least 80 mol% 1,4-butanediol radical, based on the diol component, Preferably it contains at least 90 mol%.

  Suitable polybutylene terephthalates are, on it, together with 1,4-butanediol radicals other aliphatic diols having 2 to 12 carbon atoms, or cycloaliphatic diols having 6 to 21 carbon atoms For example, ethylene glycol, 1,3-propanediol, 2-ethyl-1,3-propanediol, neopentyl glycol, 1,5-pentanediol, 1,6- Hexanediol, 1,4-cyclohexanedimethanol, 3-methyl-2,4-pentanediol, 2-methyl-2,4-pentanediol, 2,2,4-trimethyl-1,3-pentanediol, 2- Ethyl-1,3-hexanediol, 2-ethyl-1,6-hexanediol, 2,2-diethyl-1,3-propanediol, 2,5-hexanediol, 1,4-di ([beta] hydroxy Ethoxy) benzene, 2,2-bis (4-hydroxycyclohexyl) -propane, 2,4-dihydride Radicals of xy-1,1,3,3-tetramethylcyclobutane, 2,2-bis (3- [beta] -hydroxyethoxyphenyl) propane, and 2,2-bis (4-hydroxypropoxyphenyl) propane (DE -A-24 07 674, DE-A-24 07 776, DE-A-27 15 932).

  Other polyalkylene terephthalates to be used according to the invention are preferably at least two of the acid components mentioned above and / or at least two of the alcohol components mentioned above and / or 1,4-butanediol. A copolyester prepared from A particularly suitable copolyester is poly (ethylene glycol / 1,4-butanediol) terephthalate.

  The thermoplastic polyester to be used as component A according to the invention can also be used in a mixture with other polyesters and / or further polymers.

  The polycarbonate of the invention to be used (component B) is the reaction product of phosgene and a diol, preferably diphenol.

  Polycarbonate is glass-clear, can be colored, welded, and adhesively bonded, and on top of that, is highly dimensional stable and has high impact resistance Have sex. They are therefore used for the production of injection-molded goods, for example CDs and insulating foils.

  Examples of suitable diphenols are 4,4'-dihydroxybiphenyl (DOD), 2,2-bis (4-hydroxyphenyl) propane (bisphenol A), 1,1-bis (4-hydroxyphenyl) -3, 3,5-trimethyl-cyclohexane (bisphenol TMC), 1,1-bis (4-hydroxyphenyl) cyclohexane, 2,4-bis (4-hydroxyphenyl) -2-methylbutane, 1,1-bis (4-hydroxy Phenyl) -1-phenylethane, 1,1-bis (4-hydroxyphenyl) -p-diisopropylbenzene, 1,3-bis [2- (4-hydroxyphenyl) -2-propyl] benzene (bisphenol M), 2,2-bis (3-methyl-4-hydroxyphenyl) propane, 2,2-bis (3-chloro-4-hydroxyphenyl) propane, bis (3,5-dimethyl-4-hydroxyphenyl) methane, 2 , 2-Bis (3,5-dimethyl-4-hydroxyphenyl) propane, bis (3,5-dimethyl-4-hydroxyphenyl) sulfur 2,4-bis (3,5-dimethyl-4-hydroxyphenyl) -2-methylbutane, 2,2-bis (3,5-dichloro-4-hydroxyphenyl) propane, and 2,2-bis ( 3,5-dibromo-4-hydroxyphenyl) propane.

  Examples of particularly suitable diphenols are 2,2-bis (4-hydroxyphenyl) propane (bisphenol A), 1,3-bis [2- (4-hydroxyphenyl) -2-propyl] benzene (bisphenol M) , 2,2-bis- (3,5-dimethyl-4-hydroxyphenyl) propane, 1,1-bis (4-hydroxyphenyl) -1-phenylethane, 2,2-bis (3,5-dichloro- 4-hydroxyphenyl) propane, 2,2-bis- (3,5-dibromo-4-hydroxyphenyl) propane, 1,1-bis (4-hydroxyphenyl) cyclohexane, and 1,1-bis (4-hydroxy) Phenyl) -3,3,5-trimethylcyclohexane (bisphenol TMC).

  The diphenols can be used either alone or else in a mixture with each other; including homopolycarbonates and copolycarbonates. Diphenols are known from the literature or known from the literature (see for example HJ Buysch et al., Ullmann's Encyclopedia of Industrial Chemistry, VCH, New York 1991, 5th edn., Vol. 19, p. 348). Can be prepared by the process.

  It is particularly preferred that component D is melamine polyphosphate.

  It is particularly preferred according to the invention to use inorganic particulate fillers based on talc, wollastonite, kaolin and / or glass fiber.

  Inorganic fillers, especially talc, wollastonite, or kaolin, especially for applications requiring isotropic dimensional stability and high thermal dimensional stability, such as exterior body work parts in automotive applications Is preferably used.

  Moreover, acicular inorganic fillers can be used with particular preference as component E. The acicular inorganic filler according to the present invention is an inorganic filler having remarkable acicular characteristics. Acicular wollastonite is an example that can be mentioned. The inorganic length: diameter ratio is preferably 2: 1 to 35: 1, particularly preferably 3: 1 to 19: 1, and most preferably 4: 1 to 12: 1. The mean particle size of suitable acicular minerals of the present invention is preferably less than 20 microns, particularly preferably less than 15 microns and particularly preferably less than 10 microns.

  Fillers and / or reinforcements can be surface modified where appropriate using, for example, a coupling agent or, for example, a coupling agent system based on silane. However, pre-processing is not essential. In particular when glass fibers are used, it is also possible to use polymer dispersions, film-forming elements, branching agents and / or glass fiber processing aids in addition to silane.

  Where appropriate, the form of adding glass fibers to be used with particular preference according to the invention as component E is in the form of continuous filament fibers or chopped or crushed glass fibers, and these fiber diameters are: It is usually 7-18 microns, preferably 9-15 microns. The fiber can be provided with a suitable size system and coupling agent or, for example, a coupling agent system based on silane.

  Suitable coupling agents include silane compounds from the group of aminopropyltrimethoxysilane, aminobutyltrimethoxysilane, aminopropyltriethoxysilane, aminobutyltriethoxysilane, and the corresponding silane containing glycidyl group as substituent X. It is.

  A commonly used amount of silane compound for surface coating to modify the filler is 0.05 to 2% by weight, preferably 0.25 to 1.5% by weight, and especially 0.5 to 1% by weight, based on the inorganic filler. It is.

  Processing to provide a molded product composition or to provide a molded product can cause the d97 or d50 value of the particulate filler in or in the molded product composition to be less than that of the filler used initially. Processing to provide a molded article composition or to provide a molded article can cause the length distribution of the glass fibers in or in the molded article composition to be shorter than that used initially.

  In another alternative preferred embodiment, the molded article composition may comprise at least one lubricant and mold release agent as component F in addition to components A-E. Examples of materials suitable for this purpose are long chain fatty acids (eg stearic acid or behenic acid), their salts (eg Ca stearate or Zn stearate), and also their ester or amide derivatives (eg , Ethylenebisstearylamide), montan wax (a mixture composed of linear, saturated carboxylic acids having a chain length of 28 to 32 carbon atoms) and also low molecular polyethylene waxes and low molecules Polyprene wax. Lubricants from the group of low molecular weight polyethylene waxes and also esters of saturated or unsaturated aliphatic carboxylic acids having 8 to 40 carbon atoms and saturated aliphatic alcohols having 2 to 40 carbon atoms and / or The use of a mold release agent is preferred according to the invention, and very particularly preferred here is pentaerythritol tetrastearate (PETS).

  In another alternative preferred embodiment, the molding composition can contain further additives in addition to components A to E. Examples of conventional additives are stabilizers (eg UV stabilizers, heat stabilizers, gamma ray stabilizers, hydrolysis stabilizers), antistatic agents, further flame retardants, emulsifiers, nucleating agents, plasticizers, processing Auxiliaries, impact modifiers, dyes, and pigments. The additives can be used alone or in a mixture or in the form of a masterbatch, or can be premixed with component A) in the molten state or applied to the surface thereof.

  Examples of stabilizers that can be used are sterically hindered phenols and / or phosphites, aromatic secondary amines such as hydroquinone, diphenylamine, substituted resorcinols, salicylates, benzotriazoles, and benzophenones, and also these Various substituted representatives of the group, or mixtures thereof.

  Suitable UV stabilizers that may be mentioned are various substituted resorcinols, salicylates, benzotriazoles, and benzophenones.

  The impact modifier (elastomer modifier, modifier) is very commonly a copolymer, preferably a copolymer composed of at least two of the following monomers: ethylene, propylene , Butadiene, isobutene, isoprene, chloroprene, vinyl acetate, styrene, acrylonitrile, and acrylic or methacrylic acid esters having 1 to 18 carbon atoms in the alcohol component.

  Colorants that can be added include inorganic pigments such as titanium dioxide, ultramarine, iron oxide, zinc sulfide, and carbon black, and also organic pigments such as phthalocyanine, quinacridone, and perylene. , And also dyes such as nigrosine and anthraquinone, and also other colorants. For the purposes of the present invention, the use of carbon black is preferred.

  Examples of nucleating agents that can be used are sodium phenylphosphinate, calcium phenylphosphinate, aluminum oxide or silicon dioxide, and also preferably talc.

  Examples of processing aids that can be used are copolymers composed of at least one [alpha] -olefin and at least one aliphatic alcohol methacrylic acid ester or acrylic acid ester. Preference is given here to linear or branched alkyl groups in which the [alpha] -olefin is composed of ethene and / or propene and the methacrylic acid ester or acrylic acid ester has 4 to 20 carbon atoms as the alcohol component Is a copolymer containing Particularly preferred are butyl acrylate and 2-ethylhexyl acrylate.

  Examples of plasticizers that may be mentioned are dioctyl phthalate, dibenzyl phthalate, butyl benzyl phthalate, hydrocarbon oil, and N- (n-butyl) benzenesulfonamide.

  As used herein, the term “phosphinic acid salt” includes salts of phosphinic acid and diphosphinic acid, and polymers thereof.

  Phosphinates prepared in an aqueous medium are essentially monomeric compounds. As a function of the reaction conditions, sometimes polymer phosphinic salts can also be produced.

Examples of phosphinic acids suitable as constituents of phosphinates are:
Dimethylphosphinic acid, ethylmethylphosphinic acid, diethylphosphinic acid, methyl-n-propylphosphinic acid, methandi (methylphosphinic acid), benzene-1,4- (dimethyl-phosphinic acid), methylphenylphosphinic acid, and diphenylphosphinic acid .

  The salts of phosphinic acids according to the invention can be prepared by known methods which are described in some detail in EP-A-699 708 by way of example. Here, for example, phosphinic acid is reacted with a metal carbonate, metal hydroxide, or metal oxide in an aqueous solution.

  The phosphinates described above can be used in the various physical forms as a function of the polymer used and the desired properties for the compounded polyester material of the present invention. As an example, the phosphinic acid salt can be pulverized into a particulate form to achieve better dispersion in the polymer. It is also possible to use mixtures of various phosphinates if desired.

  The phosphinates according to the invention are thermally stable and do not decompose during the processing of the polymer and do not affect the manufacturing process for plastic molding compositions. Phosphinates are non-volatile under normal conditions for making and processing polyesters.

  An example of a method of incorporating components C and D into a thermoplastic polyester is to premix all of the components in the form of powder and / or pellets in a mixer and then combine them into a compounding assembly (e.g., twin screw extrusion Machine) and homogenize with polymer melt. The melt is usually drawn out in the form of strands, cooled and pelletized. It is also possible to introduce components C and D separately into the compounding assembly directly through the metering system.

  Similarly, flame retardant additives C and D can be blended with finished polymer pellets or finished polymer powder, and the mixture processed directly into an injection molding machine to form a molded article.

  In the case of polyester as an example, flame retardant additives C and D can also be added to the polyester composition prior to completing the polycondensation process.

  Flame retardant blended polyester materials are suitable for producing molded articles, films, filaments, or fibers, for example, by injection molding, extrusion, or press molding.

Particularly preferred according to the invention are combinations comprising:
30 ~ 64.9% polyester
3-15% by weight polycarbonate
Zn, Ti and / or Al salt of diethylphosphinic acid and / or methylethylphosphinic acid 8-20% by weight,
Melamine polyphosphate 8-20% by weight,
16-35% by weight glass fiber, and
Lubricant 0.1-1% by weight.

1. Used ingredients Commercially available polyester (pellet), ingredient A:
Polybutylene terephthalate ^(PBT): Ultradur ^{(registered trademark)} 4500 (BASF, Germany)
Commercially available polycarbonate (pellet), component B:
Makrolon 2805 (Bayer Material Science, Germany)
Ingredient C:
Aluminum salt of diethylphosphinic acid, hereinafter referred to as Depal.
The zinc salt of diethylphosphinic acid, hereinafter referred to as Depzn.
Ingredient D:
Melapur® 200/70 (melamine polyphosphate), Ciba Specialty Chemicals, Swiss ingredient E:
Vetrotex® EC 10 P 952 (glass fiber), Vetrotex Reinforcement, German component F:
Lubricant: Licolub® FA1, Montan wax, Clariant, Switzerland

2. Manufacture, processing, and testing of flame retardant blended polyester materials Flame retardant ingredients are mixed with polymer pellets and any additives in the ratios listed in the table and a twin screw extruder (Leistritz ZSE 27 HP-44D ) At a temperature of 240-280 ° C. The homogenized polymer strand was withdrawn, cooled in a water bath and then pelletized.

  After the article composition was properly dried, it was processed in an injection molding machine (Arburg 320C / KT) at a melt temperature of 260-280 ° C. to give specimens. The flame retardancy of molded product composition is determined by UL 94 V method (Underwriters Laboratories Inc. Standard of Safety, `` Test for Flammability of Plastic Materials for Parts in Devices and Appliances '', p. 14 to p. 18 Northbrook 1998) Sought by.

  Glow-wire resistance based on GWFI (Glow-Wire Flammability-Index) test for IEC 60695-2-12 and also GWIT (Glow-Wire-Ignition-Temperature) for IEC 60695-2-13 Obtained by testing. In the GWFI test, to determine the maximum temperature at which the afterflame time does not exceed 30 seconds and the burning dip does not occur from the specimen, a glowing wire with a temperature of 550-960 ° C is used with three specimens (eg 60 × 60 × 1.5 mm plaque). The GWIT test uses a comparative test procedure and defines the glow wire ignition temperature, which is 25K (900K) above the maximum glow wire temperature that does not lead to ignition in 3 sequential tests, even during the time of exposure to the glowing wire. 30 ° C. to 960 ° C.) High. Here, the ignition is defined as a flame whose flame time is ≧ 5 seconds.

  Examples 1 and 4 are comparative examples showing that UL 94 V-0 is not achieved at 0.8 mm and that the GWIT is only 750 ° C. Also, the tensile strength at break is less than 2% in some cases.

  Addition of 5-10% by weight of polycarbonate according to the present invention achieves a reliable V-0 classification, raises GWIT to 775 ° C., and improves tensile strength at break.

Claims (10)

As component A, 40-64.9% by weight of thermoplastic polyester, as component B, 5-10% by weight of polycarbonate, as component C, phosphinic acid salt of formula (I) and / or diphosphinic acid salt of formula (II) and / Or 10-15% by weight of these polymers:

(In the formula
R ¹ and R ² are the same or different and are H or linear or branched C ₁ -C ₆ -alkyl, and / or aryl;
R ³ is linear or branched C ₁ -C ₁₀ -alkylene, C ₆ -C ₁₀ -arylene, or -alkylarylene, or -arylalkylene;
M is Mg, Ca, Al, Sb, Sn, Ge, Ti, Fe, Zr, Ce, Bi, Sr, Mn, Li, Na, K, and / or a protonated nitrogen base;
m is 1-4; n is 1-4; and x is 1-4),
As component D, 5-10% by weight of melamine polyphosphate, as component E, 15-30% by weight of reinforcing material, and as component F, 0.1-2% by weight of further additives, where The total of the components according to the flame retardant compounded polyester material is 100% by weight. The flame retardant formulation according to claim 1, wherein R ¹ and R ² are the same or different and are methyl, ethyl, n-propyl, isopropyl, n-butyl, tert-butyl, n-pentyl and / or phenyl. Polyester material. R ³ is methylene, ethylene, n-propylene, isopropylene, n-butylene, tert-butylene, n-pentylene, n-octylene, or n-dodecylene; phenylene or naphthylene; methylphenylene, ethylphenylene, tert-butylphenylene 3. A flame retardant-containing polyester material according to claim 1 or 2, which is methyl naphthylene, ethyl naphthylene, or tert-butyl naphthylene; phenyl methylene, phenyl ethylene, phenyl propylene, or phenyl butylene.   Component E is an inorganic particulate filler based on talc, mica, silicate, quartz, titanium dioxide, wollastonite, kaolin, amorphous silica, magnesium carbonate, chalk, feldspar, and / or barium sulfate. Item 4. A flame retardant-containing polyester material according to any one of Items 1 to 3.   The flame retardant blended polyester material according to any one of claims 1 to 4, wherein the component E is glass fiber.   The flame retardant blended polyester material according to any one of claims 1 to 5, further comprising carbodiimide.   Component F is a lubricant and / or mold release agent and the lubricant and / or mold release agent is a long chain fatty acid, their salts, their ester and / or amide derivatives, montan wax, and / or low The flame retardant blended polyester material according to any one of claims 1 to 6, which is a molecular polyethylene wax and / or a low molecular weight polyprene wax.   A method for producing a blended flame retardant polyester material comprising mixing components A to F by melt extrusion in the proportions described above by weight   A fiber, foil, or molded article comprising the flame retardant-containing polyester material according to any one of claims 1 to 7.   Office work of the fibers, foils and articles according to claim 9 at home, in industry, in medicine, in automobiles, in aircraft, in ships or in spacecraft, or in other means of transport Use in equipment or other goods and structures that require a relatively high level of fire protection.